h1, h2, body {
	padding: 0;
	margin: 0;
}

.nav-bar {
	display: flex;
	height: 40px;
	line-height: 40px;
	text-align: center;
}

.left, .right {
	width: 80px;
	background-color: #f00;
}

.center {
	flex: 1;
	background-color: #f80;
}